Hi Hendrik,

The element msms_pipeline_analysis/msms_run_summary has an attribute
base_name to specify the path to the datafile.  In case the searched
file specified is different from the original data file there is
another entry in the element
msms_pipeline_analysis/msms_run_summary/search_summary for base_name.
As far as I know, there is nothing in the schema that requires these
to be unique in the pepXML file. Can you point me to where this
constraint is specified in the schema.  I checked version 1.8.

-David

On Fri, Nov 13, 2009 at 12:31 AM, Eric Deutsch
<[email protected]> wrote:
>
>
> Hi Hendrik, I think we need to get an authoritative answer from David on
> this one. And he is currently traveling in the Land of the Finns. We will
> let/ask him to answer when he is next able.
>
> Regards,
> Eric
>
>
>> From: [email protected] [mailto:spctools-
>> [email protected]] On Behalf Of Hendrik Weisser
>>
>> Hi!
>>
>> I'm working on the pepXML parser in OpenMS. I've been confronted with
>> a type of pepXML file I hadn't seen before, where search results from
>> different search engines - but for the same experiment - were
>> collected in one file (with one "msms_run_summary" per search engine).
>> I've added (maybe prematurely) support for this to the OpenMS parser,
>> and then wanted to construct a simple pepXML file for testing
>> purposes.
>>
>> In doing so, I've now come across a constraint in the pepXML schema
>> (at least from v1.8 on) that says values of the "base_name" attribute
>> (supposed to contain the full path to the searched mzXML file) in the
>> "search_summary" element have to be unique within the document.
>> What is the rationale behind this constraint? Is it supposed to
>> prevent the above case, where different searches of the same
>> experiment end up in one file? Why would that be desirable/necessary?
>> (Also note that I can construct a valid and parseable pepXML file from
>> two different search runs of the same file if I change the path in
>> "base_name"...)
>>
>> In an earlier discussion (http://groups.google.com/group/spctools-
>> discuss/msg/7760dcda02877922?hl=en), it was mentioned that
>> "base_name"s in "msms_run_summary" elements had to be unique in the
>> document - however, as per the schema, that's not true. Also, the
>> "base_name" of an "msms_run_summary" is not tied to the "base_name" in
>> subordinate "search_summary"s. If there were such a constraint, it
>> would be impossible to have more than one "search_summary" under an
>> "msms_run_summary" - however, this is allowed in the schema.
>> When does it make sense to have different "base_name"s in an
>> "msms_run_summary" and its subordinate "search_summary"(s)? Judging
>> from the schema documentation and the files I've seen, it seems that
>> the values should be the same. On the other hand, why have the
>> attribute in both elements then?
>>
>> All this adds to my confusion about the appropriate use of
>> "base_name"...
>>
>> I would be happy if someone could clear things up for me.
>>
>>
>> Best regards
>>
>> Hendrik
>>
>>
>
>
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